New preview of The Witcher up at IGN. It's basically from the point of view of the three aspects of the game the developers told the author that should stand out. Then again, we all know how IGN tends to bork quotes from developers. Anyway, potions:

One example of the game's realistic approach to fantasy is the use of potions. Although Geralt can create these using herbs and ingredients, their use is double-edged, with potential benefits, such as night vision, or swiftness, balanced by the drawback that they also poison him - causing loss of consciousness or blindness for example.